Connected: An Internet Encyclopedia
RFC 896 - Congestion control with ICMP

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### Congestion control with ICMP

Having solved the small-packet congestion problem and with it the problem of excessive small-packet congestion within our own network, we turned our attention to the problem of general congestion control. Since our own network is pure datagram with no node-to-node flow control, the only mechanism available to us under the IP standard was the ICMP Source Quench message. With careful handling, we find this adequate to prevent serious congestion problems. We do find it necessary to be careful about the behavior of our hosts and switching nodes regarding Source Quench messages.

Next: When to send an ICMP Source Quench

Connected: An Internet Encyclopedia
RFC 896 - Congestion control with ICMP